/*
 * pSEO Blocks - Classic Dark Theme
 * Linear/Vercel inspired - pure black base with purple accents
 * COMPLETE TONE SYSTEM - all required variables defined
 * 
 * Tone visual hierarchy (4 tones):
 *   dark   → #000000  (deepest - hero, footer, immersive)
 *   base   → #09090B  (primary content areas)
 *   alt    → #18181B  (elevated sections, visual breaks)
 *   accent → purple gradient (CTAs, highlights)
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap');

:root {
  /* ========================================
     CORE COLORS - Primary palette
     ======================================== */
  --color-bg: #09090B;
  --color-surface: #0F0F12;
  --color-text: #FAFAFA;
  --color-muted: #A1A1AA;
  --color-border: #27272A;
  
  /* Primary - white in dark mode (for buttons, links) */
  --color-primary: #FFFFFF;
  --color-primary-contrast: #09090B;
  
  /* Accent - purple for highlights and CTAs */
  --color-accent: #8B5CF6;
  --color-accent-light: #A78BFA;
  --color-accent-dark: #7C3AED;
  --color-accent-contrast: #FFFFFF;
  
  /* ========================================
     TONE: BASE (default content areas)
     Background: #09090B - slightly lifted from pure black
     ======================================== */
  /* These are the defaults, applied via --color-* vars above */
  
  /* ========================================
     TONE: ALT (elevated sections, visual breaks)
     Background: #18181B - clearly distinct from base
     Use for: trust bars, feature sections, alternating content
     ======================================== */
  --color-alt-bg: #18181B;
  --color-alt-text: #FAFAFA;
  --color-alt-muted: #A1A1AA;
  --color-alt-border: #3F3F46;
  --color-alt-card: #27272A;
  --color-alt-link: #A78BFA;
  
  /* ========================================
     TONE: DARK (deepest black - immersive areas)
     Background: #000000 - pure black
     Use for: hero sections, footer, full-bleed images
     ======================================== */
  --color-dark-bg: #000000;
  --color-dark-text: #FFFFFF;
  --color-dark-muted: #71717A;
  --color-dark-border: #27272A;
  --color-dark-card: #0A0A0C;
  --color-dark-link: #A78BFA;
  
  /* ========================================
     TONE: ACCENT (brand highlight sections)
     Background: purple gradient
     Use for: footer CTA, post headers, conversion areas
     NOTE: Text must be WHITE for readability on purple
     ======================================== */
  --color-accent-surface: linear-gradient(135deg, #7C3AED 0%, #5B21B6 100%);
  --color-accent-text: #FFFFFF;
  --color-accent-muted: rgba(255, 255, 255, 0.85);
  --color-accent-border: rgba(255, 255, 255, 0.25);
  --color-accent-card: rgba(255, 255, 255, 0.12);
  --color-accent-link: #FFFFFF;
  /* Eyebrow on accent - use light tint, NOT the purple accent color */
  --color-accent-eyebrow: rgba(255, 255, 255, 0.9);
  
  /* ========================================
     BACKGROUND & OVERLAY TOKENS
     ======================================== */
  --color-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.9) 100%);
  --color-overlay-solid: rgba(0, 0, 0, 0.85);
  --color-gradient-start: #7C3AED;
  --color-gradient-end: #4C1D95;
  --color-shadow: rgba(0, 0, 0, 0.5);
  
  /* ========================================
     TYPOGRAPHY
     ======================================== */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
  
  /* Heading gradient (dark theme signature) */
  --heading-weight: 700;
  --heading-gradient: linear-gradient(180deg, #FFFFFF 0%, #A1A1AA 100%);
  --heading-text-fill: transparent;
  
  /* ========================================
     SPACING & LAYOUT
     ======================================== */
  --radius: 0.75rem;
  --radius-input: 0.75rem;
  --radius-tag: 0.5rem;
  --radius-btn: 0.5rem;
  --shadow: 0 0 0 1px rgba(255, 255, 255, 0.05);
  --shadow-lg: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 8px 32px rgba(0, 0, 0, 0.4);
  --container-max: 1200px;
  --space-section-y: 5rem;
  --space-card: 1.5rem;
  --nav-height: 4.5rem;
  
  /* ========================================
     COMPONENT TOKENS - BUTTONS
     ======================================== */
  
  /* Primary button - white on dark (inverted) */
  --btn-primary-bg: #FFFFFF;
  --btn-primary-text: #09090B;
  --btn-primary-border: #FFFFFF;
  --btn-primary-hover-bg: #F4F4F5;
  --btn-primary-shadow: 0 0 20px rgba(255, 255, 255, 0.15);
  
  /* Secondary button - ghost with border */
  --btn-secondary-bg: transparent;
  --btn-secondary-text: #FAFAFA;
  --btn-secondary-border: #3F3F46;
  --btn-secondary-hover-bg: rgba(255, 255, 255, 0.05);
  --btn-secondary-hover-border: #FAFAFA;
  --btn-secondary-hover-text: #FFFFFF;
  
  /* Dark tone buttons (same as base for dark theme) */
  --dark-btn-primary-bg: #FFFFFF;
  --dark-btn-primary-text: #000000;
  --dark-btn-secondary-border: #3F3F46;
  --dark-btn-secondary-text: #FFFFFF;
  
  /* Accent tone buttons - white stands out on purple */
  --accent-btn-primary-bg: #FFFFFF;
  --accent-btn-primary-text: #5B21B6;
  --accent-btn-secondary-border: rgba(255, 255, 255, 0.5);
  --accent-btn-secondary-text: #FFFFFF;
  
  /* ========================================
     COMPONENT TOKENS - NAVIGATION
     ======================================== */
  --nav-bg: rgba(9, 9, 11, 0.85);
  --nav-border: rgba(255, 255, 255, 0.05);
  
  /* ========================================
     COMPONENT TOKENS - SEARCH & INPUTS
     ======================================== */
  --search-input-bg: #0F0F12;
  --search-input-border: #27272A;
  --search-input-focus-border: #8B5CF6;
  --search-input-focus-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
  --search-btn-bg: #FFFFFF;
  --search-btn-text: #09090B;
  --search-btn-hover-bg: #F4F4F5;
  
  /* Popular links (search section) */
  --popular-link-bg: rgba(255, 255, 255, 0.08);
  --popular-link-hover-bg: rgba(255, 255, 255, 0.15);
  
  /* ========================================
     COMPONENT TOKENS - CARDS & IMAGES
     ======================================== */
  --card-gradient: linear-gradient(145deg, #0F0F12 0%, #0A0A0C 100%);
  --image-tag-bg: rgba(255, 255, 255, 0.15);
  --image-tag-text: #FFFFFF;
  --image-title-text: #FFFFFF;
  --image-overlay-gradient: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.9) 100%);
  
  /* ========================================
     COMPONENT TOKENS - STATS & TRUST BAR
     ======================================== */
  --stat-font: 'Sora', sans-serif;
  --stat-gradient: linear-gradient(135deg, #FFFFFF 0%, #71717A 100%);
  --stat-text-fill: transparent;
  --dark-stat-text-fill: transparent;
  
  /* ========================================
     COMPONENT TOKENS - VIDEO
     ======================================== */
  --video-border-color: #27272A;
  --video-hover-border-color: #8B5CF6;
  --video-glow: 0 0 40px rgba(139, 92, 246, 0.2);
  --video-hover-shadow: 0 0 60px rgba(139, 92, 246, 0.3);
  
  /* ========================================
     COMPONENT TOKENS - TIMELINE
     ======================================== */
  --timeline-line-gradient: linear-gradient(180deg, #27272A 0%, #8B5CF6 50%, #27272A 100%);
  --timeline-number-bg: #FFFFFF;
  --timeline-number-text: #09090B;
  
  /* ========================================
     COMPONENT TOKENS - CODE BLOCKS
     ======================================== */
  --color-code-bg: #0A0A0C;
  --color-code-text: #E4E4E7;
  --color-code-border: #27272A;
  
  /* ========================================
     COMPONENT TOKENS - CALLOUTS
     ======================================== */
  --callout-tip: #10B981;
  --callout-tip-bg: rgba(16, 185, 129, 0.12);
  --callout-warning: #F59E0B;
  --callout-warning-bg: rgba(245, 158, 11, 0.12);
  --callout-note: #3B82F6;
  --callout-note-bg: rgba(59, 130, 246, 0.12);
  
  /* ========================================
     COMPONENT TOKENS - TAGS
     ======================================== */
  --tag-font: var(--font-body);
  --tag-transform: uppercase;
  --tag-letter-spacing: 0.05em;
  
  /* ========================================
     THEME EXTRAS
     ======================================== */
  --scrollbar-track: #09090B;
  --scrollbar-thumb: #27272A;
  --scrollbar-thumb-hover: #3F3F46;
  --selection-bg: rgba(139, 92, 246, 0.3);
  --selection-text: #FFFFFF;
  
  /* Hero button glow */
  --hero-btn-glow: 0 0 30px rgba(139, 92, 246, 0.3);
}

/* ========================================
   TONE-SPECIFIC BUTTON OVERRIDES
   These ensure buttons adapt to their context
   ======================================== */

/* Buttons on ACCENT tone sections (only when NOT on gradient) */
.block[data-tone="accent"]:not([data-bg="gradient"]) .btn--primary {
  background: var(--accent-btn-primary-bg);
  color: var(--accent-btn-primary-text);
  border-color: var(--accent-btn-primary-bg);
}

.block[data-tone="accent"]:not([data-bg="gradient"]) .btn--primary:hover {
  background: #F4F4F5;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

.block[data-tone="accent"]:not([data-bg="gradient"]) .btn--secondary {
  border-color: var(--accent-btn-secondary-border);
  color: var(--accent-btn-secondary-text);
}

.block[data-tone="accent"]:not([data-bg="gradient"]) .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #FFFFFF;
}

/* ========================================
   CARD STYLING ENHANCEMENTS
   ======================================== */

/* Cards get subtle gradient in dark theme */
.card {
  background: var(--card-gradient);
  border: 1px solid var(--surface-border);
}

/* Cards on alt tone get slightly different treatment */
.block[data-tone="alt"] .card {
  background: linear-gradient(145deg, #27272A 0%, #18181B 100%);
  border-color: #3F3F46;
}

/* Cards on accent tone */
.block[data-tone="accent"] .card {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

/* ========================================
   GRADIENT BACKGROUND TEXT OVERRIDES
   When data-bg="gradient" is applied, the background becomes
   purple regardless of tone. All text must be white/light.
   ======================================== */

/* Override ALL text on gradient backgrounds */
.block[data-bg="gradient"] {
  --surface-text: #FFFFFF;
  --surface-muted: rgba(255, 255, 255, 0.8);
}

.block[data-bg="gradient"] .block__eyebrow {
  color: rgba(255, 255, 255, 0.9);
}

.block[data-bg="gradient"] .hero__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.block[data-bg="gradient"] .search-section__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.block[data-bg="gradient"] .footer-cta__eyebrow {
  color: rgba(255, 255, 255, 0.9);
}

.block[data-bg="gradient"] .footer-cta__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.block[data-bg="gradient"] .footer-cta__feature-desc {
  color: rgba(255, 255, 255, 0.8);
}

/* Buttons on gradient backgrounds - WHITE for contrast on purple */
.block[data-bg="gradient"] .btn--primary {
  background: #FFFFFF !important;
  color: #7C3AED !important;
  border-color: #FFFFFF !important;
}

.block[data-bg="gradient"] .btn--primary:hover {
  background: #F0F0F0 !important;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

.block[data-bg="gradient"] .btn--secondary {
  background: transparent !important;
  border-color: rgba(255, 255, 255, 0.5) !important;
  color: #FFFFFF !important;
}

.block[data-bg="gradient"] .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.15) !important;
  border-color: #FFFFFF !important;
}

/* Links on gradient backgrounds */
.block[data-bg="gradient"] a:not(.btn) {
  color: #FFFFFF;
}

/* huge_image subtitle on gradient */
.block[data-bg="gradient"] .huge-image__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   ACCENT TONE TEXT OVERRIDES
   For sections using data-tone="accent" without gradient
   ======================================== */

.block[data-tone="accent"]:not([data-bg="gradient"]) .block__eyebrow {
  color: rgba(255, 255, 255, 0.9);
}

.block[data-tone="accent"]:not([data-bg="gradient"]) .footer-cta__eyebrow {
  color: rgba(255, 255, 255, 0.9);
}

.block[data-tone="accent"]:not([data-bg="gradient"]) .footer-cta__feature-desc {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   BUTTON STYLING - EXPLICIT OVERRIDES
   Ensure buttons always have correct colors
   ======================================== */

.btn--primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text) !important;
  border-color: var(--btn-primary-border);
}

.btn--secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--btn-secondary-border);
}

/* Breakout CTA buttons - white on dark backgrounds */
.breakout-cta .btn--primary {
  background: #FFFFFF;
  color: #09090B !important;
  border-color: #FFFFFF;
}